Engine-Codes - Generic - P114B

P114B - Post Catalyst Fuel Trim Via Oxygen Sensor System Too Lean Bank 1

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P114B Possible Causes

  • Leak in exhaust system
  • Catalytic converter clogged
  • Faulty Pressure Sensors on Intake
  • Pressure Sensors on Intake harness is open or shorted
  • Pressure Sensors on Intake circuit poor electrical connection
  • Faulty Fuel injector

How is the P114B code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What is the cost to diagnose the P114B code

Labor: 1.0

The cost to diagnose the P114B code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P114B Meaning

The diagnostic function monitors the lambda closed-loop mixture control. The Engine Control Module (ECM) sets the OBDII code when the lambda closed-loop mixture is not to factory specifications.

More Information

Need more information on how to fix the P114B code?
Get Access to Factory Service Manuals

Information for specific makes

  • P114B BMW Post Catalyst Fuel Trim Via Oxygen Sensor System Too Lean Bank 1
  • P114B MINI Post Catalyst Fuel Trim Via Oxygen Sensor System Too Lean Bank 1

Need more help?

Get the P114b code diagnosed by a professional: Find a repair shop in your area